douglas



UNITED STATES PATENT OFFICE.

JOSEPH W. DOUGLAS, OF MIDDLETOWN, CONNECTICUT, ASSIGNOR -TO W. DOUGLAS,OF SAME PLACE.

PUMP.

SPECIFICATION forming part of Letters Patent No. 244,384, dated July 19,1881.

Application filed May31,1881. (Model) To all whom it may concern Be itknown that I, J OSEPH W. DOUGLAS, of Middletown, in the county ofMiddlesex and State of Connecticut, have invented certain new andnsefulImprovements in Pumps; and I do hereby declare the following to be afull, clear, and exact-description of the invention, such as will enableothers skilled in the art to which it pertains to make and use it,reference being had to theaccompanyin g drawin gs,which form part ofthis specification.

My invention relates to an improvement in pumps, and pertains moreparticularly to that class of pumps wherein the cylinder and spout aremade of sheet-copper.

In copper pumps as heretofore constructed the spouts have been attachedto the pumpcylinder by a wiped solder-joint located at the juncture ofthe spout and the outer surface of the cylinder. This method ofattaching the spout to the cylinder has proved defective andobjectionable for the following reasons: The joint between the spout andcylinder is necessarily weak, as the spout'and cylinder at their pointof juncture, being located practically at right angles to each other,afford but a comparativelysmall surface for the solder employed insecuring the parts together, and hence-it is often the case thatthespout becomes loosened and detached from the cylinder, thereby entailing considerable trouble and expense in the necessary repairs.Again, a wiped solderjoint on the outside of the cylinder causes thefinished pump to present a cheap, unfinished, and unworkmanlikeappearanc.

The object of my invention is to obviate the defective and objectionablefeatures above referred to in this class of pumps, and to secure thespout to the cylinder in a thoroughly strong and durable manner, and atthe same time conceal from view the solder or brazed joint between suchparts.

With these ends in view my invention consists, essentially, in a copperpump-cylinder having a spout attached thereto by a solder or brazedjointlocated inaboss, nipple,or enlarge ment formed at the juncture ofthe spout and cylinder, whereby increased surface is insured betweenthe'adjacent portions of the spout and cylinder at their point ofjuncture, thereby affordin g an extened joint-surface for firmly andsecurely attaching the parts together, and,further, enabling the solderto be concealed from view and giving a complete and finished appearanceto the pump.

My invention further consists in certain features ofconstruction andcombinations of parts, as will hereinafter be described, and pointed outin the claims.

In the accompanying drawings, Figure 1 is a view, in side elevation, ofa pump constructed in accordance with my invention. Fig. 2 is a verticalsection, and Figs. 3 and 4 are vertical sections of modifications.

A represents the copper pump-cylinder, havin g a boss or nipple, B,projecting outwardly therefrom at a point where the spout is to beattach ed to the cylinder. The boss or enlargement B is formed bystriking up the metal of the cylinder around the spout-openin g C,thereby forming a converging or tunnel-shaped passage-way from theinterior of the cylinder to the spout-opening C. The extreme outer endof the boss or nipple B is forced inwardly to conceal the raw edge ofthe metal and insure a smooth and finished edge, a.

D is the spout, one end of which is inserted in the spout-opening C, andadjusted so that its inner end shall be flush, or practically flush,with the inner surface of the pump-cylinder. It will thus be observedthat by this construction a converging space, I), is formed between theinner end of the spout and the boss or nipple. Within this space b, andaround the inner end of the spout, solder cis applied, and as the solderunites the inner surface of the boss or nipple on the cylinder to theouter surface of the inner end of the spout an extended joint Instead offorming a boss or nipple on the pump-cylinder, the joint may be formedas shown in Fig. 3. In this form of construction the cylinder Ahas aspout-opening, 0, formed therein in the usual manner. The inner end ofthe spout D is outwardly flared, as at E, and when the outwardly-flaredend is placed over the spoutopening an annular gutter or chamber, e, isformed between the outer surface of the cylinder about the spout-openingand the inner surface of the flared portion E of the spout. Solder beingallowed to flow into this chamber 6, serves to firmly unite the spout tothe cylinder by an extended solderjoint, which is also completely sealedfrom view.

In Fig. 4; the construction is the same as in Fig. 3, with the exceptionthat a narrow flange or rim, f, is struck up around the spout-opening 0in the cylinder, the diameter of said rim or flange being less than thatof the outwardlyflarcd end of the spout. When the spout is applied anannular solder-chamber, g, is formed between the flared end of the spoutand the rirnf.

It is evident that many slight changes may be made in the form andrelative arrangement of parts without departing from. the spirit of myinvention, and hence I would have it understood that 1 do not restrictmyself to the exact form or arrangement of parts shown and described;but,

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-- 1. A pump-cylinder having a spout securedthereto by a solder or brazed joint formed in a boss, nipple, orenlargement located at the juncture of the spout and cylinder,substantially as set forth.

2. A pump-cylinder having a nipple or boss formed about itsspout-opening and a spout secured to the cylinder by a solder or brazedjoint located between the outer surface of the inner end of the spoutand inner surface of the nipple or boss on the cylinder, substantiallyas set forth. a

In testimony that I claim the foregoing I have hereunto set my hand thisth day of May, 1881.

JOSEPH W. DOUGLAS.

Witnesses:

J N0. M. DOUGLAS, Enwn. DOUGLAS,

